Machine tool with a work spindle

Abstract

The invention refers to a machine tool with only one work spindle which carries and drives an exchangeable machining tool. Furthermore a tool supply is provided which has tool tongs for receiving machining tools. For exchanging and replacing the machining tools a relative movement is provided. It is suggested to share out the tool supply between at least two partial magazines.

1 . Machine tool with only one work spindle which carries and drives a machining tool which can be exchanged, as well as a tool supply which has tool tongs for receiving machining tools, a relative movement being provided between tool magazine and work spindle for exchanging, respectively replacing, of machining tools on the work spindle, characterized in that the tool supply is shared out between at least two part magazines.  
   
   
       2 . Machine tool according  claim 1 , characterized in that the part magazine(s) is/are designed as tool magazine disc ( 3 ) rotating around a rotational axis ( 30 ).  
   
   
       3 . Machine tool according to  claim 1 , characterized in that the work spindle is designed movable in such a way that it can reach the respective part magazines.  
   
   
       4 . Machine tool according to  claim 1 , characterized in that the part magazines are designed in such a way that they can be shifted and brought to the work spindle, in particular be brought for a tool change.  
   
   
       5 . Machine tool according to  claim 1 , characterised in that the part magazines are arranged above the work spindle.  
   
   
       6 . Machine tool according to  claim 1 , characterised in that at least one tool magazine disc is provided which carries the tool tongs, and the tongs axis of the tool tongs is arranged radial on the respective tool magazine disc, respectively the tongs axis forms with the connection line between the rotational axis of the tool magazine disc and the tongs axis of the machining tool resting in the tool tongs an acute angle alpha.  
   
   
       7 . Machine tool according to  claim 1 , characterised in that the machine tool has two tool magazine discs ( 3 ) which carry the tongs, and the tool magazine discs ( 3 ) are located close to each other at least in the tool change position for exchanging, respectively replacing, machining tools.  
   
   
       8 . Machine tool according to  claim 1 , characterized in that the machine tool has two tool magazine discs ( 3 ) which carry the tongs, and the two rotational axes ( 30 ) of the two tool magazine discs ( 3 ) are orientated parallel, and the two tool magazine discs ( 3 ) are in one plane.  
   
   
       9 . Machine tool according to  claim 1 , characterized in that the machine tool has two tool magazine discs ( 3 ) which carry the tongs, and the two rotational axes ( 30 ) of the two tool magazine discs ( 3 ) are orientated parallel, or two tool magazine discs ( 3 ) are in one plane.  
   
   
       10 . Machine tool according to  claim 1 , characterized in that the machine tool has two tool magazine discs ( 3 ) which carry the tongs, and for the tool magazine discs ( 3 ) a guide ( 32 ) is provided, along which the tool magazine disc ( 3 ) can move linear in a linear movement (Y), and can be brought to the work spindle ( 2 ) in a tool change position.  
   
   
       11 . Machine tool according to  claim 1 , characterized in that several tool magazine discs ( 3 ) are provided which can be moved in a common guide ( 32 ) similarly.  
   
   
       12 . Machine tool according to  claim 1 , characterised in that several tool magazine discs ( 3 ) are provided and can be moved independently of each other.  
   
   
       13 . Machine tool according to  claim 1 , characterised in that several tool magazine discs ( 3 ) are provided, and can move independently of each other, and each of several tool magazine discs ( 3 ) has its own guide ( 32 ), and the respective directions of movement form with each other an angle beta, in particular an obtuse or acute angle beta.  
   
   
       14 . Machine tool according to  claim 1 , characterised in that at least one tool magazine disc is provided which carries the tool tongs, and the tool magazine disc ( 3 ) is designed like a ring and has a rotational drive.  
   
   
       15 . Machine tool according to  claim 1 , characterised in that at least one tool magazine disc is provided which carries the tool tongs, and the tool magazine disc ( 3 ) is designed a polygon.  
   
   
       16 . Machine tool according to  claim 1 , characterised in that at least one tool magazine disc is provided which carries the tool tongs, and the tool tongs ( 4 ) are arranged in a circle concentrically around the rotational axis ( 30 ) of the tool magazine disc designed as part magazine.  
   
   
       17 . Machine tool according to  claim 1 , characterised in that at least one tool magazine disc is provided which carries the tool tongs, and in the tool change position for exchanging, respectively replacing, machining tools the spindle axis ( 20 ) of the work spindle ( 2 ) and the rotational axis ( 30 ) of the tool magazine disc designed as part magazine form a straight line parallel to the linear movement.  
   
   
       18 . Machine tool according to  claim 1 , characterised in that at least one tool magazine disc is provided which carries the tool tongs, and in the tool change position for exchanging, respectively replacing, machining tools the connection line of spindle axis ( 20 ) of the work spindle ( 2 ) and the rotational axis ( 30 ) of the tool magazine disc designed as part magazine forms an acute angle sigma with the linear movement.  
   
   
       19 . Machine tool according to  claim 1 , characterised in that at least one tool magazine disc is provided which carries the tool tongs, and a relative movement (R) between tool magazine disc and work spindle for exchanging, respectively replacing, machining tools results from an interference of at least two movements, for example of the tool magazine disc ( 3 ) and the work spindle ( 2 ).  
   
   
       20 . Machine tool according to  claim 1 , characterized in that at least one tool magazine disc is provided which carries the tool tongs, and a relative movement (R) between the tool magazine disc and work spindle for exchanging, respectively replacing, machining tools results from an interference of at least two movements, for example of the tool magazine disc ( 3 ) or the work spindle ( 2 ).  
   
   
       21 . Machine tool according to  claim 1 , characterized in that at least one tool magazine disc is provided which carries the tool tongs, and a relative movement (R) between tool magazine disc and work spindle for exchanging, respectively replacing, machining tools results from an interference of the linear movement (Y) of the tool magazine disc ( 3 ) and a linear movement (X) of the work spindle ( 2 ).  
   
   
       22 . Machine tool according to  claim 1 , characterised in that at least one tool magazine disc is provided which carries the tool tongs, and a relative movement (R) between tool magazine disc and work spindle for exchanging, respectively replacing, machining tools results from an interference of the linear movement of the tool magazine disc ( 3 ) and a rotation of the tool magazine disc ( 3 ) around its rotational axis ( 30 ).  
   
   
       23 . Machine tool according to  claim 1 , characterised in that the work spindle ( 2 ) is supported in a headstock.  
   
   
       24 . Machine tool according to  claim 1 , characterized in that the work spindle ( 2 ) can be moved, respectively positioned, along a guide path ( 24 ) in a linear movement (X) of the spindle, in particular with the help of a headstock.  
   
   
       25 . Machine tool according to  claim 1 , characterised in that a tool magazine disc ( 3 ) supplies the work spindle with machining tools.  
   
   
       26 . Machine tool according to  claim 1 , characterized in that at least one tool magazine disc is provided which carries the tool tongs, and the tool tongs ( 4 ) are arranged in the tool magazine disc ( 3 ) in two or more circles ( 37 ,  38 ).  
   
   
       27 . Machine tool according to  claim 1 , characterized in that a relative movement (R) is orientated in the space between the tongs axes ( 40 ) of the tool tongs ( 4 ) which are in tool change position with reference to the work spindle.  
   
   
       28 . Machine tool according to  claim 1 , characterized in that the work spindle ( 2 ) is arranged in a working area of the machine, and a tool magazine door ( 6 ) is provided which can be opened for exchanging, respectively replacing, the machining tools, in order to bring the tool magazine disc ( 3 ) in the region of the work spindle ( 2 ).  
   
   
       29 . Machine tool according to  claim 1 , characterised in that the work spindle ( 2 ) is arranged in a working area of the machine, and a tool magazine door ( 6 ) is provided which can be opened for exchanging, respectively replacing, the machining tools, in order to bring the tool magazine disc ( 3 ) in the region of the work spindle ( 2 ), and the tool magazine door ( 6 ) is arranged suspended, in particular shifting on a machine column ( 11 ).  
   
   
       30 . Machine tool according to  claim 1 , characterized in that the work spindle ( 2 ) is arranged in a working area of the machine, and a tool magazine door ( 6 ) is provided which can be opened for exchanging, respectively replacing, the machining tools in order to bring the tool magazine disc ( 3 ) in the region of the work spindle ( 2 ), and the tool magazine door ( 6 ) is designed like a portal, which is in particular supported by a machine table.  
   
   
       31 . Machine tool according to  claim 1 , characterised in that the work spindle ( 2 ) is arranged in the working area of the machine, and a tool magazine door ( 6 ) is provided which can be opened for exchanging, respectively replacing, the machining tools in order to bring the tool magazine disc ( 3 ) in the region of the work spindle ( 2 ), and the tool magazine door ( 6 ) can be opened, respectively be moved for closing, essentially parallel to the rotational axis ( 30 ).  
   
   
       32 . Machine tool according to  claim 1 , characterised in that the work spindle ( 2 ) is arranged in a working area of the machine, and a tool magazine door ( 6 ) is provided which can be opened for exchanging, respectively replacing, the machining tools, in order to bring the tool magazine disc ( 3 ) in the region of the work spindle ( 2 ), and the tool magazine door ( 6 ) consists, like a telescope, of several door elements.  
   
   
       33 . Machine tool according to  claim 1 , characterised in that the connection line of the tool axes ( 50 ) of two machining tools ( 5 ) which are arranged in their respective tool tongs ( 4 ) is rectangular to the tongs axis ( 40 ) of the respective tool tongs ( 4 ).  
   
   
       34 . Machine tool according to  claim 1 , characterized in that at least one tool magazine disc is provided which carries the tool tongs, and the tongs axis of the tool tongs is arranged radial in the respective tool magazine disc, respectively the tongs axis forms with the connection line between the rotational axis of the tool magazine disc and the tool axis of the machining tool resting in the tool tongs an acute angle alpha, and the acute angle alpha is in an interval of 0.1° to 35°, preferably between 5° and 35°.  
   
   
       35 . Machine tool according to  claim 1 , characterized in that the spindle axis ( 20 ) is orientated parallel to the rotational axis ( 30 ).  
   
   
       36 . Machine tool according to  claim 1 , characterised in that the tool axis ( 50 ) of the machining tool ( 5 ) held in the tool tongs ( 4 ) is parallel to the rotational axis ( 30 ).  
   
   
       37 . Machine tool according to  claim 1 , characterized in that at least one tool magazine disc is provided which carries the tool tongs, and the tool magazine discs ( 3 ) are arranged above the work spindle ( 2 ).  
   
   
       38 . Tool tongs for tool magazine discs in machine tools, the tool tongs having at least one bent contact sickle which interacts with the received machining tool in its rotational symmetric shank region, and the tool tongs having furthermore a holding device for holding the machining tool in the tool tongs, characterized in that the end regions ( 42 ) of the contact sickle ( 41 ) are set back versus the half circle of the shank.  
   
   
       39 . Tool tongs according to  claim 38  for tool magazine discs in a machine tool with only one work spindle which carries and drives a machining tool which can be exchanged, with a tool supply which has tool tongs for receiving machining tools, a relative movement being provided between tool magazine and work spindle for exchanging, respectively replacing, machining tools on the work spindle, and the machine tool is characterised in that the tool supply is shared out between at least two part magazines.  
   
   
       40 . Tool tongs according to  claim 38 , characterised in that the holding device is designed as holding sickle ( 43 ), and the holding sickle ( 43 ) is in contact with the shank ( 52 ).  
   
   
       41 . Tool tongs according to  claim 38 , characterised in that the holding device is designed as holding sickle ( 43 ), and at the end regions ( 44 ) of the holding sickle ( 43 ) holding catches ( 47 ) are provided, which engage in a holding way into recesses ( 51 ) provided in the machining tool ( 5 ).  
   
   
       42 . Tool tongs according to  claim 38 , characterised in that the holding device is designed as holding sickle ( 43 ), and the end regions ( 44 ) of the holding sickle ( 43 ) are set back versus the half circle of the shank ( 52 ).  
   
   
       43 . Tool tongs according to  claim 38 , characterised in that the holding device is designed as holding sickle ( 43 ), and the holding sickle ( 43 ) is designed in such a way that it can be folded around a folding axis ( 49 ), in particular folded supported by a spring.  
   
   
       44 . Tool tongs according to  claim 38 , characterised in that the holding device is designed as holding sickle ( 43 ), and the holding sickle ( 43 ) is designed in such a way that it can be folded around a folding axis ( 49 ), in particular folded supported by a spring, and the folding axis ( 49 ) is orientated rectangular to the tongs axis ( 40 ).  
   
   
       45 . Tool tongs according  claim 38 , characterised in that on the contact sickle ( 41 ) an orientation pin ( 48 ) is provided which is in particular flattened and which interacts with an orientation nick ( 53 ) of the machining tool ( 5 ).  
   
   
       46 . Tool tongs according to  claim 38 , characterised in that the holding device is designed as holding sickle ( 43 ), and the holding sickle ( 43 ) is in contact with the shank ( 52 ), and the contact sickle ( 41 ), respectively the holding sickle ( 43 ), covers an angle range of 40° to 170°, preferably of 120° to 160°, in particular of 135° to 145°.  
   
   
       47 . Tool tongs according to  claim 38 , characterised in that the holding device is designed as holding sickle ( 43 ), and the holding sickle ( 43 ) is in contact with the shank ( 52 ), and the end regions of the contact sickle ( 41 ), respectively the holding sickle ( 43 ), are designed similarly, respectively the contact sickle or the holding sickle are designed symmetric to the tongs axis ( 40 ).  
   
   
       48 . Tool tongs according to  claim 38 , characterised in that the holding device is designed as holding sickle ( 43 ), and the holding sickle ( 43 ) is in contact with the shank ( 52 ), and the end regions ( 44 ) of the holding sickle ( 43 ) drift tangentially ( 470 ) to the tool axis ( 50 ) of a machining tool ( 5 ) held in the tool tongs ( 5 ).  
   
   
       49 . Tool tongs according to  claim 38 , characterised in that a machining tool ( 5 ) can be shifted in or out at an angle interval of an angle error ( 45 ) of up to 40°, preferably 25°, into the tool tongs ( 4 ).